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Investigators remain tight-lipped in the McLelland murder investigations and refuse to confirm information given to NBC 5 by sources over the weekend. (Published Monday, Apr 15, 2013)

County investigators will not confirm what a relative of former Texas judge Eric Williams told NBC 5 DFW over the weekend — that Williams is the FBI's prime suspect in the fatal shooting of a district attorney and his wife and that he could be charged with murder as early as Tuesday.

Williams, who is in custody after being arrested over the weekend and charged with making a terroristic threat, refused NBC 5 DFW's request to talk to him in jail on Monday.

After several searches this weekend, it appears Kaufman County investigators have turned their focus to Williams. Agents gathered evidence from Williams' Kaufman home as well as the home of his in-laws.

On Saturday night, agents searched a storage facility in Seagoville and towed away a white Crown Victoria. So far, investigators haven't revealed any connection between Williams and the storage unit or car.

The sheriff's department has not named any suspects in the murders of Mike McLelland and his wife, Cynthia, who were both found shot to death in their Forney home March 30. That came two months after one of McLelland's prosecutors, Mark Hasse, was gunned down near the Kaufman courthouse.

Both McLelland and Hasse had led the charge to convict Williams of stealing three computer monitors from the county last year. Williams lost his job. Both prosecutors criticized Williams' character.

Sheriff David Byrnes and the department remain tight-lipped about Williams arrest, claiming the case is under investigation. A spokesperson said more information should come out in arrest records, expected to be filed with the court on Monday.